<template>
	<div>
		<!-- 面包屑导航区域 -->
		<el-breadcrumb separator="/">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item><a href="/">权限管理</a></el-breadcrumb-item>
			<el-breadcrumb-item>角色列表</el-breadcrumb-item>
		</el-breadcrumb>

		<!-- 卡片视图 -->
		<el-card>
			<el-row>
				<!-- 添加角色按钮区域 -->
				<el-col>
					<el-button type="primary">添加角色</el-button>
				</el-col>
			</el-row>

			<!-- 角色列表区域 -->
			<el-table :data="roleList">
				<!-- 展开列 -->
				<el-table-column type="expand">
					<template v-slot=scope>
						<el-row :class="['bdbottom',i1===0?'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
							<!-- 渲染一级权限 -->
							<el-col :span='5'>
								<el-tag closable @close="removeRightsById(scope.row,item1.id)">{{item1.authName}}</el-tag>
								<i class="el-icon-caret-right"></i>
							</el-col>
							<!-- 渲染二级权限 -->
							<el-col :span='19'>
								<el-row :class="[i2===0?'':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
									<el-col :span="6">
										<el-tag type="success" closable @close="removeRightsById(scope.row,item2.id)">{{item2.authName}}</el-tag>
										<i class="el-icon-caret-right"></i>
									</el-col>
									<el-col :span="18">
										<el-tag type="warning" v-for="(item3,i3) in item2.children" :key="item3.id" closable @close="removeRightsById(scope.row,item3.id)">{{item3.authName}}</el-tag>
									</el-col>
								</el-row>
							</el-col>
						</el-row>
					</template>
				</el-table-column>
				<el-table-column type="index"></el-table-column>
				<el-table-column label="角色名称" prop="roleName"></el-table-column>
				<el-table-column label="角色描述" prop="roleDesc"></el-table-column>
				<el-table-column label="操作">
					<template v-slot="scope">
						<el-button type="primary" icon="el-icon-edit">编辑</el-button>
						<el-button type="danger" icon="el-icon-delete">删除</el-button>
						<el-button type="warning" icon="el-icon-setting" @click="showSetRight(scope.row)">分配权限</el-button>
					</template>
				</el-table-column>
			</el-table>	
		</el-card>	
		
		<!-- 分配权限对话框 -->
		<el-dialog
		title="分配权限"
		:visible.sync="setRightDialogVisible"
		width="50%" @close="setRightDialogClosed">
		
		<!-- 树形控件 -->
		<el-tree :data="rightsList" :props="defaultProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
		<span slot="footer" class="dialog-footer">
			<el-button @click="setRightDialogVisible = false">取 消</el-button>
			<el-button type="primary" @click="allotRights">确 定</el-button>
		</span>
	</el-dialog>
</el-dialog>
</div>
</template>

<script>
	export default{
		data(){
			return {
				roleList:[],
				setRightDialogVisible:false,
				rightsList:[],
				defaultProps: {
					children: 'children',
					label:'authName'
				},
				defKeys:[],
				roleId:''
			}
		},
		methods:{
			async getRoleList(){
				const {data:res}=await this.$http.get('roles')
				// console.log(res)
				if(res.meta.status!==200) return this.$message.error('获取数据失败')
					// this.$message.success('获取数据成功')
				this.roleList=res.data
			},
			// 根据id删除权限
			async removeRightsById(role,id){
				console.log(id)
				// 弹框提示用户是否删除
				const confirmResult=await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
					confirmButtonText: '确定',
					cancelButtonText: '取消',
					type: 'warning'
				}).catch(error=> error)
				if(confirmResult!=='confirm') return this.$message.info('取消了删除')
					const{data:res}=await this.$http.delete(`roles/${role.id}/rights/${id}`)
				if(res.meta.status!==200) return this.$message.error('删除失败')
						// this.getRoleList()
					role.children=res.data
				},
				async showSetRight(role){
					this.roleId=role.id
					// 获取所有权限数据
					const {data:res}=await this.$http.get('rights/tree')
					if(res.meta.status!==200) return this.$message.error('获取数据失败')
						this.rightsList=res.data
					console.log(this.rightsList)
					// 递归获取三级节点的id
					this.getLeafKeys(role,this.defKeys)
					this.setRightDialogVisible=!this.setRightDialogVisible
				},
				// 递归获取三级权限id，保存到数组中
				getLeafKeys(node,arr){
					if(!node.children){
						return arr.push(node.id)
					}
					node.children.forEach(item=>
						this.getLeafKeys(item,arr))
				},
				setRightDialogClosed(){
					this.defKeys=[]
				},
				// 点击为角色分配权限
				async allotRights(){
					const keys=[...this.$refs.treeRef.getCheckedKeys(),
						...this.$refs.treeRef.getHalfCheckedKeys()
					]
					const idStr=keys.join(',')
					const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})

					if(res.meta.status!==200) return this.$message.error('分配权限失败')
						this.$message.success('分配权限成功')
						this.getRoleList()
						this.setRightDialogVisible=!this.setRightDialogVisible
				}
			},
			created(){
				this.getRoleList()
			}
		}
	</script>

	<style scoped>
	.el-tag{
		margin:10px;
	}
	.bdtop{
		border: 1px solid #eee;
	}
	.bdbottom{
		border: 1px solid #eee;
	}
	.vcenter{
		display: flex;
		align-items: center;
	}
</style>	
